Colour removal from beet molasses by ultrafiltration with activated charcoal

Bernal, Marta; Ruiz, María Olga; Geanta, Ramona M.; Benito, José M.; Escudero, Isabel

doi:10.1016/j.cej.2015.07.047

Cited by 42 publications

(19 citation statements)

References 30 publications

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“…Sugar beet molasses is formed as the final residue from the sugar production process. Due to the high content of fermentable sugars 50–55 % (sucrose, glucose, fructose, and raffinose), the applications of molasses are widespread in the food, feed, and fermentation industries . Nevertheless, besides the water in molasses, non‐sugar compounds 28–33 % like betaine, lactic acid, amino acids, minerals, and the colourants responsible for the molasses’ dark brown colour are also present.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the appearance of technical problems such as low permeate flux and membrane fouling during filtration is inevitable. To mitigate these problems, different approaches like the application of pulsed electric field (PEF) during juice extraction, pre‐treatment of juice with lime or adsorbent, insertion of turbulence promoters (static mixers) to produce fluid instability, as well as operating condition optimization could be possible solutions . Previous studies on membrane separation process application in sugar beet molasses treatment were focused on the use of UF.…”

Section: Introductionmentioning

confidence: 99%

“…According to the results, in both cases clarified permeates were obtained. Recently, Bernal et al studied the combined effect of powder activated carbon (PAC) treatment and cross‐flow UF on sugar beet molasses decolourization. The optimal conditions for high colour reduction (over 96.5 %) without adsorption of sucrose, betaine, citric acid, or lactic acid, were the following: pH 3, PAC concentration of 5 g/L, transmembrane pressure of 100 kPa, and feed flow rate of 4.24 L/h.…”

Section: Introductionmentioning

confidence: 99%

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Modelling of cross‐flow microfiltration coupled with bentonite treatment in sugar beet molasses purification

et al. 2018

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The removal of colourants and other non-sucrose compounds from sugar beet molasses opens the possibility for more acceptable and effective recovery of sucrose, which is the most valuable sugar industry product. In the presented study, the feasibility of the sugar beet molasses purification process, which combines sodium bentonite pre-treatment and microfiltration with an embedded static mixer, was examined. Molasses pretreatment with sodium bentonite consisted of a bentonite suspension addition (7 g/L) under the following conditions: pH 5, temperature 50 8C, and contact time 30 min. Sugar beet molasses separation from bentonite was performed by cross-flow microfiltration using a 200 nm TiO 2 ceramic tubular membrane with static mixer absence or presence and variation in the sugar beet molasses flow rate and dry substance. The molasses purification process efficiency was validated through the permeate flux values as well as colour and turbidity measurements. Higher molasses colour (20-60 %) and turbidity reduction (83.4-99.2 %) was achieved in the experiments with static mixer absence, while static mixer introduction greatly increased the final and especially steady-state permeate flux.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Modelling of cross‐flow microfiltration coupled with bentonite treatment in sugar beet molasses purification

et al. 2018

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“…Ceramic microfiltration (MF) and ultrafiltration (UF) membranes have been applied for the removal of suspended particles in water treatment . Because of their inherently superior mechanical property, chemical resistance and thermal stability, they are especially suitable for the separation of micron and submicron particles in harsh conditions (such as at high temperature, where conventional polymeric materials fail) .…”

Section: Introductionmentioning

confidence: 99%

Ceramic micro/ultra‐filtration of low‐concentration ultrafine sulfur in desulfurization wastewater

Yin

Wang

Zhong

et al. 2016

J of Chemical Tech & Biotech

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BACKGROUND A low concentration of ultrafine suspended sulfur (SS) in the wastewater produced from the coking gas desulfurization process is a serious problem. In this study, ceramic microfiltration and ultrafiltration membranes were used to remove ultrafine SS for further recovery. RESULTS Results showed that membrane with a pore size of 0.05 µm at the operating conditions 0.15 MPa, 40 °C and 4.0 m s−1 experienced the lowest flux decline and degree of fouling in comparison with other conditions. All membranes exhibited good rejections of sulfur (>99.9%) and tar oil (>98.0%). The SS ranged from 1.5 to 34.0 g L−1 had no influence on the permeate turbidity (<1 NTU) but resulted in an increase in the tar oil content and a decrease in the permeate flux. SEM/EDX results indicated that the membrane surface was fouled by the sulfur particles and ammonium salts, while the tar oil entered the membrane pores. An effective cleaning method with high flux recovery (>98%) was applied to remove the foulants using mixed solutions of 1% (w/w) NaOH and 0.5% (w/w) NaClO. CONCLUSION The results showed that the ceramic membranes are effective in ultrafine sulfur removal from the wastewater. © 2016 Society of Chemical Industry

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“…Currently, there are attempts to decolourize vinasse by both physicochemical (Arimi et al, 2015;Bernal et al, 2016) and microbiological (Agnihotri, 2015;David et al, 2015;Georgiou et al, 2016;Santal et al, 2016) methods. The present study proposes the use of lactic acid bacteria, which occur naturally in the sugar beet molasses vinasse, and after decolourization, they could assist the preparation process of silage feed with the addition of purified vinasse.…”

Section: Introductionmentioning

confidence: 99%

Microbiological Colourants Removal from Sugar Beet Molasses Vinasse – The Effects of Process Parameters and Vinasse Dilution

Wilk¹,

Krzywonos²,

Seruga³

2017

EES

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Distilleries, in addition to ethanol, produced vinasse which is hazardous for the environment. Sugar beet molasses vinasse (BMV) is the most problematic waste from distilleries because of the coloured compounds contained therein. Traditional methods of the removal of the pollutant load from the waste do not allow simultaneous decolourization. The paper presents a microbiological method of coloured compounds removal from BMV. The conditions of the process (pH and temperature) and vinasse concentration were optimized. The bacteria Lactobacillus plantarum MiLAB393 applied showed the decolourization activity of 26% in medium consisted of 30% v/v of BMV at pH0=6.5 and 35.8°C.

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Colour removal from beet molasses by ultrafiltration with activated charcoal

Cited by 42 publications

References 30 publications

Modelling of cross‐flow microfiltration coupled with bentonite treatment in sugar beet molasses purification

Modelling of cross‐flow microfiltration coupled with bentonite treatment in sugar beet molasses purification

Ceramic micro/ultra‐filtration of low‐concentration ultrafine sulfur in desulfurization wastewater

Microbiological Colourants Removal from Sugar Beet Molasses Vinasse – The Effects of Process Parameters and Vinasse Dilution

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